深入研究 Javascript 阵列的特定索引

Question

new to Javascript and having a hard time understanding some data manipulation.

I'm pulling over some data from a var from PHP to JS and cannot figure out how this is indexed! Any help is greatly appreciated!!

$heretimePh1 = "{rate:958.741566}, {rate:958.741566}, {rate:958.741566}, {rate:958.741566}, {rate:7669.932528}, {rate:7669.932528}, {rate:7669.932528}, {rate:7669.932528}, {rate:5000}, {rate:7669.932528}, {rate:7669.932528}, {rate:7669.932528}, {rate:7669.932528}, {rate:7669.932528}, {rate:7669.932528}, {rate:7669.932528}, {rate:7669.932528}, {rate:7465.172304}, "

Here is my code for trying to create a var for the first value of 958.741566

var a = <?php echo $heretimePh1; ?>;
var b = a['rate'];
var c = b[0];

But that does not seem to be working out at all, any pointers in the right direction much appreciated, unsure what I'm missing as most documentation is what seems to be the usual []

Answer 1

To close out this question, the data coming from the PHP var $heretimePh1 was a string, even though it had multiple values and,'s from a mysql query using PHP gettype showed it was NOT an array and was a string. Using the PHP function explode(",", $heretimePh1); I was able to get was I was looking for.